P0117 on Honda Odyssey
Factory diagnostic protocol and troubleshooting wire for fault code P0117 specifically for the Honda Odyssey (2020–2026, 3.5L SOHC VTEC V6 (280HP / 10-Speed Auto)).
1. Symptoms of P0117 on Honda Odyssey
When the Engine Control Module (ECM/PCM) on your Honda Odyssey (3.5L SOHC VTEC V6 (280HP / 10-Speed Auto)) logs fault code P0117, drivers commonly observe:
2. Most Likely Causes on Honda Odyssey
Historical warranty claims and technical repair bulletins for Honda Odyssey point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for Honda Odyssey
Read ECT live PID on scanner. If it reads 284°F (140°C) or higher with engine cold, a short to ground exists. on the Honda Odyssey equipped with 3.5L SOHC VTEC V6 (280HP / 10-Speed Auto).
Unplug sensor connector while watching live data. If temperature drops to -40°F (-40°C), the sensor itself is shorted. on the Honda Odyssey equipped with 3.5L SOHC VTEC V6 (280HP / 10-Speed Auto).
If reading stays pegged at max with sensor unplugged, inspect harness for pinch points grounding against engine block. on the Honda Odyssey equipped with 3.5L SOHC VTEC V6 (280HP / 10-Speed Auto).
Allow engine to cool, unscrew old ECT sensor from coolant crossover pipe or thermostat housing, install new OEM sensor with fresh thread sealant. on the Honda Odyssey equipped with 3.5L SOHC VTEC V6 (280HP / 10-Speed Auto).
Bleed air from cooling system, clear DTCs, and verify normal temperature rise on live data. on the Honda Odyssey equipped with 3.5L SOHC VTEC V6 (280HP / 10-Speed Auto).
Equipment for Diagnosing Honda Odyssey (P0117)
VVT Oil Control Solenoid Valve
Restores accurate camshaft timing and oil pressure regulation on Honda Odyssey.
AstroAI Auto-Ranging Digital Multimeter
Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.
BlueDriver Bluetooth Pro OBDII Scan Tool
Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.
Other Common Fault Codes on Honda Odyssey
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Honda Odyssey:
4. Honda Odyssey P0117 FAQs
What causes code P0117 to trigger on a Honda Odyssey?
On the Honda Odyssey (3.5L SOHC VTEC V6 (280HP / 10-Speed Auto)), P0117 is most frequently caused by ECT sensor internal short to ground or Short circuit to ground in ECT signal wiring harness.
Where is the OBD-II port located on my Honda Odyssey?
On the Honda Odyssey, the 16-pin DLC diagnostic connector is located Under driver dash, behind small flip cover near hood release. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my Honda Odyssey with code P0117?
No. The ECU thinks the engine is at 280°F+ (overheating) and runs rich or disables cooling fan logic. Given that P0117 carries a High severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.